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  <div id="layout-content"><div id="function.curl-multi-select" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">curl_multi_select</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">curl_multi_select</span> &mdash; <span class="dc-title">在任意 curl_multi 连接上等待活动</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.curl-multi-select-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>curl_multi_select</strong></span>(<span class="methodparam"><span class="type">resource</span> <code class="parameter">$mh</code></span>, <span class="methodparam"><span class="type">float</span> <code class="parameter">$timeout</code><span class="initializer"> = 1.0</span></span>): <span class="type">int</span></div>

  <p class="para rdfs-comment">
    阻塞到任意 curl_multi连接上有活动。
  </p>

 </div>


 <div class="refsect1 parameters" id="refsect1-function.curl-multi-select-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    <dt>
<code class="parameter">multi_handle</code>
</dt>
<dd>
<p class="para">由 
<span class="function"><a href="function.curl-multi-init.html" class="function">curl_multi_init()</a></span> 返回的 cURL 多个句柄。</p></dd>

    
     <dt>
<code class="parameter">timeout</code></dt>

     <dd>

      <p class="para">
       以秒为单位，等待响应的时间。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 
 <div class="refsect1 returnvalues" id="refsect1-function.curl-multi-select-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回描述符集合中描述符的数量。如果没有任何活动的描述符，则为
   0。失败时，此函数将在 select 失败时返回 -1（来自底层 select 系统调用）。
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.curl-multi-select-changelog">
  <h3 class="title">更新日志</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>版本</th>
      <th>说明</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
 <td>8.0.0</td>
 <td>
  <code class="parameter">multi_handle</code> expects a <span class="classname"><a href="class.curlmultihandle.html" class="classname">CurlMultiHandle</a></span>
  instance now; previously, a <span class="type">resource</span> was expected.
 </td>
</tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 seealso" id="refsect1-function.curl-multi-select-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.curl-multi-init.html" class="function" rel="rdfs-seeAlso">curl_multi_init()</a> - 返回一个新cURL批处理句柄</span></li>
   </ul>
  </p>
 </div>


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